In World War II, the Marines needed a code the enemy could not break. They decided to try one based on the Navajo language, which was unwritten and spoken by very few people outside the Navajo Nation. In May 1942 the first 29 Navajo recruits arrived at Camp Elliott near San Diego and built the code themselves, adding a layer of code words on top of their language. From then on, Code Talkers served in every major Marine operation in the Pacific. During the battle of Iwo Jima, six Code Talkers worked around the clock and sent more than 800 messages without a single error. Their signal officer said the Marines would never have taken Iwo Jima without them. God can use what others overlook.